// #include <stdio.h>
// #include <string.h>
// #define Q '"His Hamlet was funny without being vulgar."'

// int main(){
//     printf("%s\nhas %d characters.\n", Q, strlen(Q));
//     return 0;
// }

// talkback.c -- 演示与用户交互
#include <stdio.h>
#include <string.h> // 提供strlen()函数的原型
#define DENSITY 62.4 // 人体密度（单位：磅/立方英尺）
int main()
{
    float weight = 62.4;
    float volume;
    int size, letters;
    char name[40]; // name是一个可容纳40个字符的数组
    char duo[40];
    printf("Hi! What's your first name?\n");
    scanf("%s", name);
    printf("%s, what's your weight in pounds?\n", name);
    scanf("%f", &weight);
    size = sizeof name;
    letters = strlen(name);
    volume = weight / DENSITY;
    printf("Well, %s, your volume is %2.2f cubic feet.\n",
    name, volume);
    printf("Also, your first name has %d letters,\n",
    letters);
    printf("and we have %d bytes to store it.\n", size);
    scanf("%s", duo);
    printf("多余滴 %s\n", duo);
    printf("He sold the painting for $%-8.2f.\n", 2.345e2);
    return 0;
}